Aseptomag® valve line Double-chamber Valves Aseptomag® DDK

Aseptomag® double-chamber valves DDK are used for the mixproof shut-off of incompatible products at pipe junctions in aseptic processing plants.

Welded stainless steel bellows are used to hermetically seal the product area from outside contamination. The two integrated steam barriers (ISB) can be operated independently from each other and enable the safe separation of both product lines, even while lifting valve seat B of the double-chamber internal assembly. The third valve seat enables additional flexibility for your process with reduced downtime while cleaning. It even enables maintenance work at the valve for the lower product line while running production through the upper line.

Main Components

Housing
Housings for double-chamber valves DDK are available with two, three or four connection ports. The valves are produced with standard butt-weld connections by default. Mixed connection port sizes as well as various aseptic pipe connections are available upon request.
 
Internal Assemblies
The double-chamber valve DDK includes an internal assembly with two valve seats (same as DK valve) and an internal assembly with one valve seat (same as AVBS valve). The larger seat (seat B) of the DK internal assembly contains a shrunk valve seat seal made of Tefasep®. The other two valve seats are available with a shrunk or screwed valve seat seal. In addition to the standard Tefasep® sealing, other material options such as PTFE are also available. The nominal diameter of the valve is determined by the larger valve seat (valve seat B) of the DK internal assembly.
 
Actuator
The double-chamber valve DDK includes two actuators. The standard version of both pneumatic actuators is designed as spring-closing / air-opening (NC). The actuator for the double-chamber internal assembly enables single seat lifting for both valve seats (seats A+B) as well as a full valve stroke (3 valve strokes in total). The actuator for the single-seat internal assembly allows doing a full stroke and a reduced stroke for venting the valve seat.
 
Clamp
Due to its solid construction, the GEA clamp enables a pressure stable and safe connection of the main components. The special design with three segments allows a service-friendly handling of the component, even under tight space conditions.
 
Side valves
Each of the two sterile chambers includes a steam inlet and an outlet valve by default. The fail-safe position (NC or NO) of both side valves can be chosen independently from each other. The outlet can be equipped with integrated temperature probe which enables temperature measuring in the sterile chamber. In addition, the outlet can be configured with a divert valve to directly apply a sterile media also to the drain side of the valve.
 
Feedback units
Aseptic double-chamber valves type DDK can be either equipped with open feedback units or T.VIS® feedback systems by default. Feedback units from third party suppliers can be mounted via special adaptors.

 

Technical Data of standard execution

Item Size
Nominal pressure valve 10 bar
Closing pressure 5 - 6 bar (depending on valve size)
Control air pressure 6 bar
Hermetic sealing element Stainless steel bellows
Valve seat seal material Tefasep®
Housing seal Silicone
Surface quality in product area Ra ≤ 0.8
Material quality in product area AISI 316L / AISI 316Ti
Max. operating temperature 150°C (302 °F)
Max. sterilization temperature 160 °C (320 °F) for max. 30 min.

Aseptomag® Valve Technology

Aseptomag® aseptic valves are designed to meet the highest demands for aseptic processes in the dairy, food and beverage industry.

Aseptic bellows valves distinguish themselves with the uncompromisingly hermetic seal of the valve stem, thereby minimizing contamination risks and maximizing detection possibilities. The Aseptomag® valve line is the equivalent for aseptic processes to the hygienic VARIVENT® valve line and provides everything from shut-off and bottom-seat to mixproof and sampling valves. The valves meet the highest hygienic standards required, such as EHEDG and 3-A standards. Thanks to the modular structure, the Aseptomag® valve line also allows tailor-made valve solutions for specific process requirements (higher closing pressures, special materials, special design, etc). Aseptomag® valves can be equipped with T.VIS® control tops and can therewith seamlessly be integrated into an automated process plant.

Aseptic Applications

For aseptic processes, the following areas have to be considered: Product sterilization, conveying and maintaining sterility, and filling under sterile conditions. Aseptic processes signify high-quality products and/or long shelf-life, produced for specific consumer groups. Besides classic UHT milk products, medical nutrition, baby food, aseptically produced beverages and applications within biotech belong to this hygienic class.

Aseptomag® at a Glance

  • Hermetic sealing by stainless steel bellows
  • Uncompromising detection possibilities
  • Highest aseptic standard
  • Easy and safe maintenance
 

Sizes *

Valve type Metric Inch OD
Shut-off Valves Aseptomag® AV DN 15 – DN 150 0.75” – 6”
Shut-off Valves Aseptomag® AVBS DN 15 – DN 150 0.75” – 6”
Divert Valves Aseptomag® UV DN 15 – DN 100 0.75” – 4”
Shut-off Valves Aseptomag® AF DN 25 – DN 100 1” – 4”
Control Valves Aseptomag® RV DN 15 – DN 100 0.75” – 4”
Control Valves Aseptomag® RVIN DN 25 – DN 65 1“ – 2.5“
Back-pressure Valves Aseptomag® GD DN 15 – DN 150 0.75” – 6”
Shut-off Valves Aseptomag® AMV DN 06 – DN 10 0.25” – 0.5”
Leakage Valves Aseptomag® LV DN 40 – DN 100 1.5“ – 4“
Leakage Valves Aseptomag® DT DN 40 – DN 100 1.5“ – 4“
Leakage Valves Aseptomag® ADV DN 25 – DN 100 1” – 4”
Double-chamber Valves Aseptomag® DK DN 25 – DN 150 1” – 6”
Double-chamber Valves Aseptomag® DKBS DN 25 – DN 150 1” – 6”
Double-chamber Valves Aseptomag® DDK DN 25 – DN 150 1” – 6”
Double-chamber Valves Aseptomag® AXV DN 25 – DN 150 1” – 6”
Sampling Valves Aseptomag® PV DN 10 – DN 15 0.5” – 0.75”
Steam inlet valves Aseptomag® DE DN 25 – DN 40 1” – 1.5”
* Additional valve sizes and connection standards (i.e. ISO) available upon request